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Autonomic Nervous System Phasing

Meaning

Autonomic Nervous System Phasing refers to the precisely timed, reciprocal activation patterns of the sympathetic and parasympathetic branches of the Autonomic Nervous System (ANS) across the 24-hour day. This rhythmic switching is crucial for maintaining physiological stability and dictates periods of activity versus rest. Optimal phasing involves sympathetic dominance during the day for alertness and metabolism, transitioning to parasympathetic dominance at night for digestion and recovery. Disrupted phasing can indicate chronic stress or circadian misalignment, impacting heart rate variability and overall vitality.